662 kts

Local speed of sound = 39 x √(Temperature in Kelvin)

15°C in Kelvin is (15 + 273) = 288

So the local speed of sound = 39 x √288 = 662 kts

Windshear is a change of wind speed and/or direction from place to place, including updraughts and down draughts.

It is ussualy characterized by a strong change over a short distance. Windshear can effect the flight path and airspeed and can be hazardous.

It’s an official document for the safety of the flight.

A copy of this document needs to remain on the ground.

1st segment starts at screen height and finishes at gear retracted.

2nd segment starts when the gear is retracted and finishes when acceleration alt is reached (min. 400ft max 1000ft) speed V2.

3rd segment starts at acceleration alt, minimum 400ft, and finishes when the flaps are retracted.

4th segment starts when the flaps are retracted, MCT is set and finishes at the 1500ft.

Fuel injection provides:

• Fuel free from vaporization ice

• Better economy through metered delivery

• More responsive and efficient engine

• Less maintenance

Angle of attack is the angle between the chord of the aerofoil and the relative airflow.

Angle of incidence is the angle between the chord and the aircrafts longitudinal datum.

IRS / GPS / VOR / DME

Induced drag and its wing tip vortices are a direct consequence of the creation of lift by the wing.

Since the Coefficient of Lift is large when the Angle of Attack is large, induced drag is inversely proportional to the square of the speed whereas all other drag is directly proportional to the square of the speed.

The effect of this is that induced drag is relatively unimportant at high speed in the cruise and descent where it probably represents less than 10% of total drag. In the climb, it is more important representing at least 20% of total drag. At slow speeds just after take off and in the initial climb, it is of maximum importance and may produce as much as 70% of total drag.

Finally, when looking at the potential strength of wing tip vortices, all this theory on induced drag must be moderated by the effect of aircraft weight. Induced drag will always increase with aircraft weight.

There are 2 types of leading edge devices:

-Slats. Slats are movable surfaces on the leading edge of the wing which when deployed, allow the wing to operate at a higher angle of attack, by delaying separation in the wing upper surface.

-Leading edge flaps (Krueger). Leading edge flaps are hinged on the leading edge of the wing and extend forward and down when deployed. they provide similar benefits as trailing edge flaps, by increasing wing surface area and camber.

Wingtip vortices are tubes of circulating air that are left behind a wing as it generates lift.

They are caused by the difference in pressure above and below the wing causing the air to 'escape' from the high pressure area below the wing to the low pressure area above the wing, by rolling around the tip of the wing. This creates a vortex that trails behind the wing.